In order to guide the localities to carry out post-earthquake biogas tank surveys and maintenance work and resume the operation of the biogas digesters as soon as possible, this method has been specially developed. This plan is not applicable to rural households that have already collapsed or have become dangerous buildings and completely destroyed biogas digesters. The biogas digesters need to be rebuilt in the future. I. Main types of damaged methane tanks after the earthquake Due to the strong seismic waves, biogas digesters mainly cause structural damage such as overall destruction, cracking, misalignment, and sinking, and two types of damage to biogas supporting equipment due to house damage. (I) Destruction of digester structure 1. The overall destruction means that the biogas tank is distorted, broken, broken, and collapsed as a result of strong seismic waves. 2. Cracking refers to the cracking and cracking of biogas tank pool walls, arch covers and water pressure tank walls under the powerful action of seismic waves, resulting in leakage of biogas digesters. 3. Misalignment means that the biogas digester is under the influence of the seismic shear wave, causing misalignment between the feed pipe, water pressure, arch cover, and the junction of the digester pool wall, resulting in water leakage. 4. Subsidence refers to the fact that the biogas pool is under the action of seismic longitudinal waves, which causes the overall sinking of the digester pool. 1. Pipeline damage mainly refers to the loss, fracture, dislocation, bending, deformation and other damage of the biogas pipeline along with the damaged house wall. 2. The damage of the governor mainly refers to the spoilage of other falling objects, the looseness of the governor and the gas pipe joints, and the damage of the internal structure. The desulfurizer contacts the air-heated burnout desulfurizer. 3, biogas stove damage mainly refers to other falling objects smashed, and gas pipe joints loose or detached, due to damage to the house contact with rain and water corrosion. (a) The test procedure determines whether the digester has been damaged or not. It is mainly determined from the following four steps: whether the pipeline is damaged, the pressure reading of the digester, the water level change between the water pressures, and the arch cover crack. The first step is to detect biogas supporting equipment, including the appearance of pipes, fittings, regulators, and cookers. The second step is to check the reading of the biogas pressure gauge. The third step is to check the water pressure and water level. The fourth step is to detect the methane tank arch cover. The fifth step is to empty the liquid and test the cell body. (b) Test methods 1, pipeline detection methods are: First, direct observation of the pipeline is off, deformation, loose. The second is to smear pipe joints with soapy water to observe if any air bubbles are generated and determine if the pipe is leaking. 2. Observe the reading of the biogas pressure gauge under the premise of ensuring that the biogas supporting equipment is intact. If the reading is below 1, it indicates that the digester is damaged. 3. Observe changes in the water level between the water pressure in the digester. If the fluctuation range exceeds 20-30cm, it indicates that the digester is damaged. 4. Open the cover of the methane tank arch cover and observe if there is any crack. If the crack exceeds 3mm, it indicates that the methane tank is damaged. After determining the damage of the digester and determining the location of the damage, three types of maintenance methods, including structural damage repair, seepage and leakage repair, and general maintenance, are used. (A) structural damage repair 1, biogas tank cracking maintenance. Crack the crack into a "V" shaped groove, first sweep it with pure cement slurry, fill it with C20 fine stone concrete, compact and polish. After the concrete is solidified, use pure grout to brush 3-4 times. 2, dislocation maintenance. Dig out the mud in the misaligned area of ​​the biogas digester and roughen the misplaced area. Fill the C20 fine stone concrete. After the concrete is solidified, plaster and brush the pure cement slurry. 3, sinking damage and maintenance. The integrated sinking methane tank with undamaged main structure reconnects the pipe to the air pipe. 1, seepage maintenance. In the water seepage part, the fast water glass blocks the water seepage hole. If the seepage water flow is large and the water pressure is high, insert the soft plastic pipe into the water seepage hole first, and then use 1:1 cement mortar and water glass to block it around, then plug it with a cork. Plastic nozzle, brush 1:1 cement mortar. 2, leak repair. Rinse the interior of the air box first and then brush it with pure cement for 3 times. Pharmaceutical Prefilled Syringes, we are the specialist of prefilled Syringes, prefilled Syringes With Needle, wholesale high-quality products of Glass Prefilled Syringe R & D from China.Finished prefilled syringes can meet the FDA`s authorised 14-day sterility test and bagging with ETO Sterilization.We have the perfect after-sales service and technical support. Prefilled Syringes Prefillable Syringes,Preloaded Syringes,Prefilled Syringes China Lemon Trading Co.,Ltd , https://www.sterilevial.nl
(b) Damage to the biogas supporting equipment
Second, after the earthquake biogas detection steps and detection methods
Third, after the earthquake damaged digester main maintenance methods
(b) Biogas Leakage Leakage Maintenance
(3) General maintenance The biogas tank will be spalled and stripped to remove hairs, rinse and clean, and then press the “three wipes and four brushes†seven-layer practice again.